Periodic Table Practice Problems
Grades 6-10 · 5 problems
Practice your knowledge of the periodic table with these problems. Test your understanding of element symbols, atomic numbers, and group properties.
Tip: The periodic table is organized by increasing atomic number, which is the number of protons in an atom's nucleus. Elements in the same group (vertical column) have similar chemical properties.
1
What is the atomic symbol for the element Sodium?
2
What is the atomic number of Hydrogen?
3
What group number is the element Oxygen (O) in?
Common Mistakes
- Confusing element symbols with element names.
- Incorrectly counting groups, especially skipping transition metals.
- Forgetting that atomic number is the number of protons.
- Thinking mass number is the same as atomic mass.
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